Concatenate fields on multiple child rows into one single string

Question

Hi -
I'm pretty much new to BI Publisher, and I looked through the forums for what I was trying to do below, but couldn't find much on this.
Here's my data source:
<BUSINESSES>
<BUSINESS>
<NAME>Microsoft</NAME>
</BUSINESS>
<BUSINESS>
<NAME>Apple</NAME>
</BUSINESS>
<BUSINESS>
<NAME>Google</NAME>
</BUSINESS>
<BUSINESS>
<NAME>Yahoo</NAME>
</BUSINESS>
</BUSINESSES>
What I was trying to do is create a single string from the XML data source in the form
Microsoft,Apple,Google,Yahoo,............
Here was my plan to do this:
1. Create a global variable - <?variable:AllNames;''?>
2. Loop - For each BUSINESS
2a. Capture NAME - <?variable@incontext:BusName;'NAME'?>
2b. Concatenate it to the global variable AllNames - <?variable:AllNames;concat($AllNames,',',$BusName)?>
3. End Loop
4. Display global variable - <?$AllNames?>
I get a blank RTF when I run this.
Can someone please advice me on this? I thought it would be pretty simple to do, but here i am at the end of the day, and ...
Thank you.

Answer 1

There are multiple ways to do it..
one option of using variable, which i would not certainly do is this :)
<?xdoxslt:set_variable($_XDOCTX,'TESTTEST’,’’)?>
<?for-each:/BUSINESSES/BUSINESS?>
<?position()?>: <?NAME?> <?xdoxslt:set_variable($_XDOCTX,'TESTTEST’,  concat(xdoxslt:get_variable($_XDOCTX,'TESTTEST’),’,’ ,NAME) )?>
<?end for-each?>
<?xdoxslt:get_variable($_XDOCTX,'TESTTEST’)?>